Lowering and raising apparatus for ships&#39; boats



Dec. 25,123. ums

H. W. BROADY LOWERING AND RAISINGY J XPPARATUS FOR SHIPS BOATS Filed Jan. 22. 1920 2 Sheets-Sheet 1 (June-whoa Dec. 25Jj923. 1,478,546

, H. w. BROADY/ LOWERING AND RAISING APPARATUS FOR SHIPS BOATS Filed Jan. 22. 1920 2 Sheets-Sheet 2 Patented Dec. 25, 1%23.

warren sraras err rice.

HARRY W. BROADY, 0F BAYSIDE, NEW' YQRK, ASSIGITOR TO AMERICAN BALSA COM- PANY, INC, A CORPGRATION OF NEW YORK.

' LOWEEING-r AND RAISING APPARATUS FOR SHIPS BOATS.

Application filed January 22, 1920. .Serial No. 353,207.

To all whom it may concern:

Be it known that l, HARRY W. BROADY, a citizen of the United States, and a resident of Bayside, borough of Queens, county of Queens, and State of New York, have invented certain new and ,useful Improvements in Lowering and Raising Apparatus for Ships Boats, of which the followingis a specification.

, This invention relates to improvements in lowering and raising apparatus for ships boats.

In lowering ships boats, and particularly in lowering nested boats, it is desirable to provide double falls on a single davit or on each davit of a pair of davits in order to permit the swinging out and lowering of one boat and then without waiting to wind up the lowered falls, to swing the davit inboard and utilize the other falls with the same davit arm for swinging out and lowering a second boat. When, however, double falls have heretofore been employed on a single davit arm, the loaded operating falls were frequently fouled by the unloaded in-' operative falls, and, particularly, parts of the loose outer falls, after being used to lower a boat, have often become jammed between the block and the upwardly running parts of the inner loaded falls, bringing the end of the boat to which such falls are secured to an abrupt stop, while the opposite end is still being lowered. It has therefore been dangerous to utilize double falls on a single davit arm.

The object of this invention is to enable the safe utilization of double falls in cooperation with a single davit arm and to maintain the parts of'such double falls in such spaced relationship to each other during use that the'danger of fouling of the parts of one falls by the parts of the other falls will be greatly reduced, and a more rapid, economical and safe handling of lifeboats, and particularly of nested life-boats,

is made possible.

Another ob'ect of my invention is to provide for the double falls a .spacing device having a common, and preferably a cen trally-disposed swinging connection with the davit arm whereby each of the falls when loaded will automatically assume a position in a perpendicular plane intersecting the said connection and the unloaded falls will be swung and retained away from such perpendicular plane so as to prevent any contact or fouling of the loaded falls thereby.

With these and other objects in view, the. invention comprises the combination of members and arrangement of parts so com" bined as to co-act and cooperate with each other in the performance of the functions andthe accomplishment of the results here-. in contemplated, and comprises in one of its adaptations the species or preferred form illustrated in the accompanying drawings, in which Fig. l is a side elevation of raising and lowering apparatus. embodying my invention, illustrating the manipulation of the top boat of two nested boats by a pair of davits;

Fig. 2 is a similar side elevation of a pair of davit arms showing the position of the parts during the swinging out and lowering of the second or lower boat;

Fig. 3 is an enlarged side elevation of the upper end of the apparatus showing the position of the falls during the swinging out and lowering of the first or top boat of two nested boats; 7

Fig. 4: is a similar side elevation showing the position of the upper part of the falls during the swinging out and lowering of the second or lower boat; and

Fig. 5 is a front or outboard view of the top portion of a davit arm, yoke and falls forming part of my invention.

Referring now to these drawings, which illustrate a preferred embodiment of my invention, 1 indicates one type of davit arm adapted to be used by me in carrying out my invention, a pair of these arms being shown in the operation of swinging out a boat in Figs. 1 and 2. Each of the davitarms illustrated is of the quadrant type hav ing at its lower end a quadrant 2 rolling upon a rack 3 formed in a frame 4;, and pivoted intermediate. its ends at 5 on a nut. 6 threaded on and movable rectilinearly and substantially parallel. to the deck by means of a screw 7, journalled for rotary movement only in the frame 4:. r

To the upper end ofthe davit arm, I attach a single attaching and spacing device for the double falls provided with a C0111. mon centrally disposed connection with the davit arm. As illustrated, a yoke, substantially triangular in conformation, prefercarrying and spacing of double falls 12 and 13 respectively. Said yoke is adapted to be swung about its connection with the end of the davit arm by the weight of the load as the davit arm swings from its inboard to outboard positions and vice versa, and the arm to which the load is secured will consequently assume a position in a perpendicular plane intersecting said connection and thus enable a ready lowering of the load in any suitable outboard position of the davit arm, while the other arm of the yoke to which the unloaded falls are attached will be swung away from such perpendicular plane and spaced from the loaded falls. The falls to which the load is attached thus control the swinging movement of the yoke about its connection with the davit arm, and the upper block of the unloaded falls will, by the weight of the load, be swung and retained at a suitable nonfouling distance from the perpendicular line occupied by the loaded falls.

The oppositely-disposed arms 10 and 11 of the yoke preferably extend radially of the connection between the davit arm and yoke at an acute angle to each other with an arc of substantially 90 therebetween, so that when the loaded falls assumes a position parallel or coincident with the perpendicular line 7 along which the load is dropped, the unloaded falls will be swung in the arc of a circle and without undue friction a maximum distance at oneside of the said perpendicular line, and the falls hanging from such unloaded arm will thus be retained in such spaced relation from the operating or loaded 'falls as to greatly reduce the possibility of a fouling contact between the same.

In the normal or inoperative position of the apparatus, the outer falls are connected to the top one of two nested lifeboats while the lower end 14 of the inner falls are fastened to a hook and cleat 15, 15 on the middle portion of the davit arm so as to be out of the way.

After the top boat is swung out and lowered, the davit arm is brought inboard again without winding up the outer falls and the inner falls are then disconnected from the cleat 15 and secured to the lower lifeboat which is then swung out and lfowered while the outer falls are hanging ree.

The lower block of the unloaded falls will, as illustrated in Figs. 1 and 2, hang on the outside of the boat which is lowered by the inner falls and such unloaded falls being thus spaced at the upper and lower ends thereof from the operating falls will be entirely out of the way and all possibility of fouling thereof will begreatly reduced.

In the preferred form of the invention shown, the upper end of the davit arm has an eye 1, the hook 9 is inserted therethrough, and the mouth 16 of the said hook is then closed by means of a pin 17 which is prefer- I ably passed, as shown, through the bill and shank of the hook so as to prevent a possible slipping of the hook out of the eye in its swinging movement or in the swinging movement of the davit.

Having described my invention I claim 1. In apparatus forlowering and raising ships boats, thercombination with a davit arm, of a falls-attaching device having a connection with the outer end of said davit arm; and also having elements spaced from each other for attaching double falls; double falls attached to said elements, said device being movable to swing each of said fallsattaching elements alternately into a plane in a vertical plane about said connection,

said attaching device having arms extending laterally to opposite sides of said connection, and double falls, one of which is connected toone end of one of said laterallyextending arms and the other to the opposite end of the other arm.

3. In apparatus for lowering and raising ships boats, the combination with a davit arm provided at its upper end with an eye, a yoke provided with a centrally-disposed hook hooked in said eye to permit the swinging of the yoke inboard and outboard in relation to said upper end of the davit; yoke arms on opposite sides of said hook and falls connected to each of such arms.

4. An apparatus for lowering and raising ships boats, the combination with a davit arm provided at its upper end with an eye, a yoke provided with a centrally disposed hook hooked in said eye to permit the swinging of the yoke inboard and outboard in relation to said upper end of the davit; arms extending radially in opposite directions from the said connection, falls attached at one end to each of such yoke arms, and means on the lower portion of the davit arm for fastening the lower end of one of said falls.

5. In apparatus for lowering and raising ships boats, the combination with a davit arm provided at its upper end with an eye, a

davit; yoke arms on opposite sides of said each davit arm intermediate its ends for hook, falls connected to each of such arms fastening the lower end of a falls thereto. and a pin for closing the mouth of said hook. In witness whereof I have signed my 6. In apparatus for lowering and raising name to the foregoing specification in the 5 ships bgatsglthg (lzlomfbinatiofii v;ith g plair of presence of two subscribing witnesses. avits, on e a s or eac o sai avits; an attaching device for the upper ends of HARRY D the double falls carried by each davit at its Witnesses: upper end and movable to swing inboard and CHARLES J. GALE, 10 outboard of said upper end and means on R. N. RITTER. 

